Edward poppowitsch



{Na Model.)

' E. POPPOWITSGH.

PRIMARY ELECTRIC BATTERY.

No. 511,159. Patented Dec. 19, 1893.

WITNES ES.

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WASHINGYON: a, c.

-UNITED STATES PATENT @nnicn,

EDWARD POPPOWITSCH, on BROOKLYN, ASSIGNOR or ONE-HALF T0 HERMAN WUSTENFELD, on NEW YORK, n. Y.

PRIMARY ELECTRIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 511,159, dated December 19, 1893.

Application filed December 28,1892. Serial No. 456,588- (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD POPPOWITSCH, a subject of the Emperor of Austria-Hungary, residing at Brooklyn, in the county of Kings and State of New York, have inventedcertain new and useful Improvements in Primary Electric Batteries, of which the following is a specification.

This invention relates to that class of open circuit galvanic batteries known as dry batteries, and the object of my invention is to produce a simple, cheap and very effective battery, in which the zinc can be readily replaced by new ones after they are spent, and in which a constant current of high electromotive force is obtained until the zines are entirely used up. w

The invention consistsof a galvanic-battery comprising an acid-proof containing jar, carbon-plates and zines supported therein from the top of the jar, and a packing within the space around the carbons and zines consisting of sawdust, sea-salt, sal-ammoniac, granulated manganese and concentrated sulphuric-acid, which packing is moistened from time to time by supplying a small quantity of water through a plugged opening in the top of the containing-jar, thereby forming a wet packing embedding the positive and negative plates.

In the accompanying drawings, Figure 1 represents a vertical transverse section of my improved galvanic battery, on line 1 i, Fig. 3. Fig. 2 is also a vertical transverse section of the same taken at right-angles to the plane of Fig. 1, on the line 2 2, Fig. 3, and Fig. 3 is a plan-view of the battery.

Similar letters of reference indicate corresponding parts.

In the drawings, A representsacontainingjar which is constructed of sheet-metal and coated at the interior and exterior surfaces with a layer of asphaltum or other acid-proof material. The topplate A of the jar A is made of the same material and supports the carbon-plates O O which are inserted into openings in thetop-plate, said carbons being provided with binding posts at their upper projecting ends for the conducting wires. The top-plate A is provided at two or more points with openings and fixed downwardlyextending sleeves a. through which the zincs B B are inserted, the upper ends of the zines projecting like the upper ends of the carbons above the top-plate of the jar and being provided with binding screws forthe conducting wires. The spaces between the carbon-plates, zines and the wall of the containing-jar is packed tightly with sawdust that is mixed with an exciting solution composed of ten parts of sea-salt, ten parts of sal-ammoniac, ten parts of bi-chromate of potash, ten parts of mercury, ten parts of granulated manganese and one part of concentrated sulphuric acid. All these ingredients are mixed with the sawdust in dry state, the sulphuric acid being added last, thus forming a packing all round the zinc and carbon-plates, so that the full benefit of the excitants may be obtained.

To start the battery, the packing is supplied with a small quantity of water, which is inserted through an opening in the topplate, which opening is closed by a suitable plug 02, after the water is supplied. From time to time the jar is supplied with a new quantity of water. This is continued from time to time until the zines are entirely used up. The zincs can then be readily replaced by new ones when they are used up. This is readily accomplished by withdrawing the old zines from the sleeves of the top-plate and inserting new ones into the same. The zincs can also be removed from time to time, cleaned and re-inserted, the battery retaining its moisture for a long time and furnishing aconstant current of high electro-motive force. By re-supplying a small quantity of water from time to time, the life of the battery can be extended for a considerable length of time.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. An electricbattery, composed of a closed acid-proof containing-jar, positive and negative plates supported in said jar, and a packing of sawdust, sea-salt, sal-ammoniac, bichromate of potash, granulated manganese and concentrated sulphuric-acid, mixed in or about the proportions specified.

2. -In an electric-battery, a packing for sepmy invention I have signed my name in presarating the positive and negative p1ates,-c0mence of two subscribing witnesses.

posed of a mixture of saw-dust, sea-salt salammoniac, bi-ehrornate of potash, mereury, EDWARD POPPOWITSOH' 5 granulated manganese and concentrated sul- Witnesses:

phuric acid, substantially as set forth. PAUL GOEPE In testimony that I claim theforegoing as .I'IARRY WILLARD GRIFFITHS. 

